package com.stu.config.websocker;

import lombok.extern.slf4j.Slf4j;
import org.springframework.stereotype.Component;

import javax.websocket.OnClose;
import javax.websocket.OnMessage;
import javax.websocket.OnOpen;
import javax.websocket.Session;
import javax.websocket.server.PathParam;
import javax.websocket.server.ServerEndpoint;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.CopyOnWriteArraySet;

/**
 * @Classname WebSocket
 * @Description TODO
 * @Version 1.0.0
 * @Date 2022/2/14 12:28
 * @Created by yd
 */

/**
 * 在线测试 地址 https://wstool.js.org/ |连接 是 ws://127.0.0.1:9101/hello/websocket/{user01}
 */
@Slf4j
@Component
@ServerEndpoint("/websocket/{userName}")
//此注解相当于设置访问URL
public class WebSocket {

    private Session session;

    private static CopyOnWriteArraySet<WebSocket> webSockets = new CopyOnWriteArraySet<>();

    private static ConcurrentHashMap<String, Session> sessionPool = new ConcurrentHashMap<String, Session>();

    @OnOpen
    public void onOpen(Session session, @PathParam(value = "userName") String userName) {
        this.session = session;
        webSockets.add(this);
        sessionPool.put(userName, session);
        System.out.println(userName + "【websocket消息】有新的连接，总数为:" + webSockets.size());
    }

    @OnClose
    public void onClose() {
        webSockets.remove(this);
        System.out.println("【websocket消息】连接断开，总数为:" + webSockets.size());
    }

    @OnMessage
    public void onMessage(String message) {
        System.out.println("【websocket消息】收到客户端消息:" + message);
    }

    // 此为广播消息
    public void sendAllMessage(String message) {
        for (WebSocket webSocket : webSockets) {
            System.out.println("【websocket消息】广播消息:" + message);
            try {
                webSocket.session.getAsyncRemote().sendText(message);
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
    }

    // 此为单点消息
    public void sendOneMessage(String userName, String message) {
        System.out.println("【websocket消息】单点消息:" + message);
        Session session = sessionPool.get(userName);
        if (session != null) {
            try {
                session.getAsyncRemote().sendText(message);
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
    }

}
